Oxyacetylene-torch.



A. F. lENKINS.

OXYACETYLENE TORCH.

APPLICATION FI LED OCT. 13, 913

Patented June 5, 1917.

.l-mwm amen STATES PATENT OFFICE."

ALEXANDERF. JENKINS, 0F BALTIMORE, -MARYLAND, ASSIGNOR TO THE ALEXANDER MILBUBN COMPANY, OF BALTIMORE, MARYLAND, A CORPORATION OF MARYLAND. 3

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Specification of Letters Patent.

Patented June 5, 1917.

Application filed October 13, 1913. Serial No. 794,898.

.torchcs for use in connection with oxy-acetylene generating or other apparatus adapted to supply a suitable combustible mixture capable of developing the intense heat necessary for welding metals and for similar purposes.

One of the principal objects of the invention is to construct a light hand operable tool with a simplear'rangement of parts to form a suitable handle section provided with gas passageways, the controlling means of which may be readily adjusted by the hand holding the torch, o I

A further object comprises the arrangement of the valve stems and operating means therefor so that both will be confined within the general outline of the handle section of the torch so that they will not accidentally catch in the clothing of the operator or elsewhere.

' Another object of the invention is to provide a torch in which the gases forming the combustible mixture are intimately mixed so that the danger from back-firing and explosion will be eliminated.

The above and other'objects and the novel features of the invention will be apparent from the following description, taken in connection with the drawings, in which Figure 1 is a side elevation of a torch embodying my invention;

the rear casting of the handle section;

Fig. 3 is a verticallongitudinal section of the front casting of the handle section;

Fig. 4 is a central vertical section of the torch head;

Fig. 5 is a cross-sectionalong the line 5-5 of Fig. 1, looking in the direction of the arrows, and

Fig. 6 is a transverse cross section on the line 66 of Fig. 4:.

Referring to the drawing, the torchcomprises a handle section, a'head orburner section, and a tube connecting the head with the handle section.

Fig. 2 is a vertical longitudinal section of.

The handle section com-- prises two castings which are connected" by two or more pipes to form a grip in the shape of a frame, the gases forming the combustible mixture entering the pipes through passageways into the rear casting and discharging from said pipes in the front casting where they unite in the mixing chamber flowing from thence through the connecting tube into the head and discharging at the tip of the latter.

A brass casting 10, for convenience designated the rear or inlet casting, is located at the rear of the handle section and provided. with two inlet openings 11 and 12. Suitable hose couplings 13 and 14 are threaded to fit I in the inlet openings 11 and 12 and are respectively connected by flexible hose or otherwise to oxygen and acetylene supplies under pressure.

An unobstructed oxygen passageway 15' I extends from the inlet opening 11 through the casting at its lower end and opens into the pipe connection .16. The inlet opening 12 communicates with an acetylene passageway 17 extending through the upper-portion of the casting and is provided intermediate its ends with a valve chamber 18- inwhich aneedlevalve 19 is arranged to control the flow of gas through the passageway 17 to the pipe connection 20. The needle valve 19 is formed integral with the end of a valve stem 21 which extends through a boss 22 on the front side of the rear casting 10, a sleeve 23 serving to maintain the packing 24 around said valve stem-21 and prevent leakage past the stem.

A brass casting 25 designated for convenience the front casting has two inlet pipeconnections 26 and 27 on its rear face. The metal pipes 28 and 29 are suitablythreaded at their ends to fit the pipe connections 16, 26 and 20, 27 respectively, to thereby connect the two castings l0 and 25 and form a,

valve stem 33 which extends through a has I I and leads to a mixing chamber-in the casting 38 fitted to the front end of the casting 25 by the screw threaded connections 39.

her is formed has a tapering inlet opening -40. The inlet opening 40 is connected to a flaringoutletopening 41 by means of a narrow passageway 2, the outlet opening 41 discharging into 'the pipe connection 43 to whichthe connection mixture tube 44 is attached. I

The pipe connection 27 leads to a passageway 45 which has a tapering portion 46 terminating in the passageway 47 of uniform section located in the discharge tip 48 \vhich latter is disposed in the inlet 40 of the mixing chamber 38. An annular chamber is thus formed around the tip 48 and a mixm device in the form of an injector is provide The tip 48 forms the nozzle of the injector, an annular chamber 49 being provided into which the oxygen from the passageway 37 is forced under 'pressure and drawn by the action of the injector. The injector serves to intimately mix the gases, the discharge outlet t? of the tip 48 being concentrically arranged with the mixing chamber in the casting 38 and the acetylene therefrom meeting the oxygen from the passageway 37 as it enters the mixing chamber.

The mixture tube 44 is threaded at one end .to fit the connection 43 and at its opposite end to fit the pipe connection 50 in the head casting 51, disposed at an angle thereto, dclivering the mixture from the front casting to the burner head through a side opening 52 in the casting 51.

The head casting 51 has an opening in its upper end which opening is closed by means of the screw plug 53. Below the inlet opening of the casting 51 there are two series of restricted circular passageways 55 arranged conceutrically which connect a chamber 56 opposite the said inlet opening 52 with a chamber 57 near the lower end of the casting 51. At its center the plug 58 through which the passageways 55 cxtcnd is solid. A detachable burner tip or nozzle 5!) is secured to the cast ng 51 by means of 1 threaded sleeve 60 winch has an inturucd flange 61 that engages under a shoulder (l the casting, together with the restricted passageways 55, serve to more thoroughly mix the gases and prevent back-fire, the fact that the passageway 63 is also out of line with any of the, restricted passageways 55 also servesto assist in mixing the gases and prevent back-firing or explosions.

It will be noted that the valve stems 21 and 33 are arranged in line and directed toward one another. Each valve stem is pro-. vided with a threaded portion (it at its outer end which fits in sockets 65 at opposite ends of a knurled turn-buckle (36. The sockets are interiorly threaded so that when the turn-buckle is rotated in one direction both valve stems will be withdrawn and permit the flow of gases through the passageways which they control and when turned in the opposite direction both valve stems may move in opposite directions to adjust the.

flow orcut it off as desired. The turnbuckle 66 is placed between the parallel pipes 28 and 29, and is of such a size that it will not extend appreciably beyond the general outlines of the handle section and can be readily turned by the hand which holds the torch. The outer ends of the valve stems are each guided by means of a suitable hub 67 on' a spider 68 which latter is located between the pipes 28 and 29. The turn-buckle 66 is prevented from moving longitudinally by the spiders 68 at the ends thereof against which said turn-buckle bears.

As shown in Figs. 1 and 5. intermediate the ends of each valve stem there is a corrugated ratchet device 69 \vhichis rigidly mounted on the valve stem or may be made integral therewith. ted around the pipes 28 and 2!) opposite each ratchet member (39 and has projections 71 and 72 struck therefrom on opposite sides of said ratchet device, the said projcctions acting as pawls and engaging the ratchet wheel 69 and serving to prevent the accidental rotation of-the valve stem and also to prevent its rotation when the turu-lulckle or knob (ill. is rotated. The pair of spiders G8 and the bands serve as reinforcing elements for the frame formed by the pipes 28 and 29.

A metal band 70 is fit- I lowe'ver, the pawl and ratchet devices which prevent the accidental rotation of the valve stem are so arranged that they will not prevent the independent adjustment of one or the other of said valve stems as it possible with sufiicicnt turning cilort to force the ratchet ()9 past the projections 71. and 72 and cfiect the independent :uljustment of either valve stem. A pin 73 projects from each valve stem between the spider 68 and band 7Q and serves to engage the hub 67 and limit movement of the valve stem into the socket -65 so that the valve stems will not jam therein.

The operation of the device will be clear from the foregoing description. and acetylene being admitted at the inlets 11 and 12 will flow through the casting 10, pipes 28 and 29 into the front casting 25 Oxygen where they will unite-in the mixing chamber in the part 38 of the said casting'flowing from thence as a mixture to the casting 51 of the head where they are more thoroughly mixed and discharged through the passageway 63 in the tip 59. The'supply of gases may be simultaneously regulated by means of the turn-buckle 66 to which the valve stems are attached. It will be seen that a Simple and handy appliance has been constructed which may be eaiily and safely manipulated and which is susceptible of numerous modifications. It is therefore not intended to limit the invention to the exact details as shown arid described.

Having thus described my invention, what I claim is:

1. In a torch of the class described, the

combination of a casting having channels extending therethrough, a second casting having channels theretln-ough, pipes connecting the castings and the channels therein ,thereby forming gas conduits, valves controlling said conduits, stems connected with said valves, means for operating said stems and valves,.the stems and operating means extending between the said pipes, and a torchhead connected to one of said castings.

2. In a torch of the class described, the

combination of castings having passageways extending therethrough, pipes con- "nectingthe castings and the passageways therein, valves controlling said passage Ways and operating means for said valves having parts thereof disposed between said pipes.

3. Inc torch of theclass described, the combination of a handle section comprising'a casting having Tgas inlets,-a second casting having gas outlets, and pipes joining the castings and connecting the inlets with the outlets, means extending into the space between said pipes for controlling the flow of gas from said inlets to said outlets, a burner tip, and a tube between and connecting the burner tip "with the handle section,

i, In a torch of theiclass described, the

combination of a handle section compns- ,ing a casting at one end having 1nlets,.pne of which is provided with a valve, a casting at. the opposite end. iaving independent passageways therein, one of which is pro- 'g vided with a valve, and pipes connecting the passageways in the first casting, operthe passageways 1n the second casting with ating means for said valves, said means being located between the said pipes, a burner tip, and a pipe connecting the burner tip with the second casting.

5. In a torch of he class described, the

combination of a casting having passageways therethrough, a valve controlling one of the passageways, a second castinghavmg passageways therein, a second valve tween the pipes for controlling the flow of' gas through said pipes, a burner nozzle, and a tube disposed between the burner nozzle and the pipes.

7.111 a torch of the class described, the combination of a plurality of pipes, means connecting corresponding ends of said pipes, said means having fluid inlets one of which is controlled by a valve, a nozzle constituting the burner of said torch, a mixture tube discharging into said nozzle, and means for connecting the outlet ends of said pipes to said tube comprising a member having mixing means therein and a valve controlled passageway-leading to I said mixing means.

8. In a torch of the class described, the

combination of a casting having an unob-' structed passageway and a valve controlled passageway, a second casting having an unobstructed passageway connected to said valved passageway in the first mentioned casting, and a valved passageway connected to the unobstructed passageway in the first mentioned casting, said second casting-also having a common outlet for the passagef ways therein, and a burner nozzle connected to said outlet.

9. In a torch of the class described, the combination of parallel pipes, devices wherebysaid pipes are connected at their ends to form a grip for the torch, each of said devices having a valved passageway and an unobstructed passageway therein,

and a burner nozzle attached to one of said connecting devices. V p

10. In a torch of the class described, the

combination of a plurality of pipes, members connecting said pipes at their ends,

said members having passageways therethrough opening into said pipes, a gas mixing device'on one of said members, a valve located on the member upon whlch said mixing device is mounted, said valve controlling the supply of gas from one of said passageways to said mixing device, and a burner head connected to receive the mix-T ture from said mixing device.

11. In a torch of the class described, the combination of devices having passageways extending therethrough, pipes connecting the passageways in said devices, a burner head, a mixing device-in one of said devices having one inlet thereof located di rectly in line with one of said pipes, and means for controlling the flow of gas through said pipes to said mixing device.

12. In a torch of the class described, the combination of a front casting and a rear casting each having passageways therein, pipes connecting the passageways in the castlngs, an injector within the front casting to which both the passageways in the latter lead and a valve in said front passageway controlling the supply of gas from one of said passageways to said injector.

13. In a torch of the class described the combination of front and rear castings having passages there-in, pipes between said castings connecting the same and the passages therein, a valve on each casting controllinga passage therein, means whereby sa id valves may be simultaneously operated and a burner head and tip connected to the frout'casting.

H. In a torch, the combination of castings having passageways therein, pipes connecting the passageways and castings, valves controlling the passageways, operating means for the valves disposed between said pipes, and a'burner head connected to one of said castings.

15. In a torch, the combination of castings having passageways therein, pipes connectingthe passageways and castings, valves controlling the passageways, and having valve stems extending between said pipes, means disposed between said pipes for operating the stems to adj use the valves and a burner head connected to one of said castings. a,

16. In a torch of the class described, the combination of front and rear castings having passages therein, oxygen and acetylene pipes connecting said castingsand the passages therein, a valve on each castinj; controlling a passage therein, means w iereby said valves may be adjusted independently of each other, and means whereby the valves may be simultaneously operated 17. In a torch, the combination of castings having passageways extending therethrough, pipes connecting said castings and the passageways therein, a valve in. each casting'controlling one of the passageways therein, a common means for operating both va1ves,.a nd a torch-head connected to one of said castings.

18. In a torch, the combination of eastings having passageways extending therethrough, pipes connecting said castings and,

the passageways therein, a valve in each casting'controlling one of the passageways therein, valve stems attached to the valves and extending between said pipes, a turnable devi e between the ends of the stems and adap :d to engage and move the latter, and atorch head connected to one of said castings.

19. In a torch, the combination of castings having passageways extending therethrough, pipes connecting said castingsand the passageways therein, a vaive in each casting controlling one of the passageways therein, valve stems attached to the'valves and extending between said pipes, a'turm able device having threaded sockets adapted to receive the ends of the stems and move the same longitudinally, means for guiding the stems and preventing the rotation thereof, and a torch head mounted on one of said castings.

-2t). In a torch, the combination of castings having passageways extending therethrough, pipes connecting said castings and the passageways therein, a valve in each -asting controlling one of the passageways therein. valve stems attached to the valves and extending between said pipes, said stems being threaded at their outer ends and provided with corrugations intermediate their ends, projections engaging said corrugated portions of the valve stems to prevent the accidental rotation of the stems but ermitting the adjustment thereof at'wii, a turnable member provided with threaded sockets to receive the threaded ends of said stems, said member being adapted to move the stems longitudinally, guiding means for. the stems and adapted to reinforce the pipes, and a torch head mounted on one of said castings.

21. A torch heml'comprising a casing having .an inlet, and an outlet and two mixing chambers between said inlet and out-v let connected by a plurality of parallel contracted passageways.

22. A head for a torch of the class described, comprising the combination of a casing having an inlet, a tip having an outlet opening therein attached to said casing, and means between said inlet and tip having a series of restricted passages therethrough. parallel to the axis of said casing and so disposed in said causing as to leave chain'- bers adjacent the inlet to the casing and the outlet in the tip.

23. A head for a torch of the class described comprising the combination of a casing haying openings therein including an inlet opening and a bottom opening, a tip having a central passageway therethrough and fitting the bottom opening,

'means for attaching the, tip to the casing,

15 ed passageway extending lengleudinaliy nozzle discharging from we of said pipes into" said mixing chamber, means for admitting gas fi om the otherpipe to said chamber behind'the out-let sf said nezzle, a

5 burner heed, e-pipe eenneeting said mixing chamber and burner heed, e tip meunted e21 the-outlet end 03%. Elle biii'nei: head, and means fer-eentrolling the-flew ed ges'threiigh said pipes'o seid'mifiing ebambeiz 25., A terell eem'prisinge head l avingen inlee gnea'r one end, substaneie outlet the ether eed,- end mixing elimib'ers between said inletend enlxlee, said rzizing' eliembei's being e'ennecied by e.- lest we 01 the head; end the outletof said passageyvey being out i line with the ouelel, 0;? said head, so as in resist beck-fire.

26. in a torch 01"" ehe- CllSS described, an

2 oxygen supply pipe, an icet-ylene. supply valve-s may be independently adjusted.

l 2?. In 11 torch of the class described, the eembmation of an oxygen conducting means, an acetylene conducting means, valves for controlling the flew of gas through said.

conducting means, means whereby said valves may be operated simultaneously and means "whereby said valves may be independently adjusted. In testimony whereof I effix my signature in presence oi two Witnesses.

ALEXANDER F. JENKINS.

Witnesses:

VERNON L. GARRISON, S. TJVATJ(F.W 

